Home / 30,138.48-41,568.39-25,383.78

Finding the Fourth Proportional to 30,138.48, 41,568.39 and 25,383.78

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Solution

The fourth proportional to 30,138.48, 41,568.39 and 25,383.78 is: 35,010.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,138.48 : 41,568.39 = 25,383.78 : x
  2. Step 2: Convert to fraction form
    30,138.48/41,568.39 = 25,383.78/x
  3. Step 3: Cross multiply
    30,138.48x = 41,568.39 × 25,383.78
  4. Step 4: Simplify right side
    30,138.48x = 1,055,162,866.71
  5. Step 5: Solve for x
    x = 1,055,162,866.71/30,138.48
  6. Step 6: Final answer
    x = 35,010.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.